An Electron Is Accelerated from Rest Through a Potential Difference

question 24

Multiple Choice

An electron is accelerated from rest through a potential difference. After acceleration the electron has a wavelength of 880 nm. What is the potential difference responsible for the acceleration of the electron? (h = 6.626 × 10^-34 J ∙ s, m_electron = 9.11 × 10-31 kg, e = 1.6 10^-19 C)

• A) 1.9 × 10^-6 V
• B) 1.7 × 10^-6 V
• C) 2.2 × 10^-6 V
• D) 2.5 × 10^-6 V

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Definitions:

Downward Sloping

A descriptive term for a graph line that shows a decrease in value as it moves from left to right, often used in economics to describe demand curves.

Demand Curve

A graph showing the relationship between the quantity of a commodity demanded and its price.

Monopolist

An entity that is the sole provider of a particular product or service in a market, thereby controlling its price.

Downward-Sloping

A term often used in economics to describe a line or curve on a graph that depicts a decrease in one variable as another variable increases, commonly seen in demand curves.